Late Glee star Cory Monteith’s death was classified as accidental after he consumed a lethal dose of heroin and alcohol, according to a report issued by a Canadian coroner’s office on Wednesday.

The 31-year-old actor was found dead on July 13 in a hotel in Vancouver. Monteith had spoken frankly with the media in the past about his ongoing struggle with substance abuse, which he had reportedly battled since his early teenage years.